A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

These pretty kitties killed and ate as many as 135 railway workers.

Even in death, he's still your huckleberry.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The "lovely red Vega" of the legendary record-settling pilot.

Home to items never before seen by the public.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

A fitting attraction for the corn capital of the world.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This museum glorifies the humble potato.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A cemetery housing wild west legends in South Dakota.

The first declared National Monument in the United States.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

This freshwater spring fills with 10,000 gallons of water per minute.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.